NCS: AN1 application (attach self addressed envelope for approval letter)

[plabo]

Has anyone tried attaching a prepaid envelope when submitting his AN1 application at the NCS?

The reason to know is if someone has been able to receive the Naturalisation approval letter this way rather than the miserable 2nd class post route?

[alterhase58]

This has been asked a few times before but there seems to be no definite feedback for this. You can certainly try this with the NCS. In the end all you loose is a few Pounds. They are agents for UKVI and cannot guarantee that the envelope will be used. Let us know what they say.
Guessing, from a procedural and governance point of view, case workers won't be generating, printing and enveloping approval letters. Once a case has been decided it is likely flagged on the system as such and then batch printed, and letters quality reviewed against a list of decided cases and then released for posting, with checks that all internal approvals are in place. This is how certain things are run in business, but again who knows government processes.